动词不定式
动词不定式
动词不定式一. 定义：动词不定式是非谓语动词的一种，它没有人称和数的变化，在句子中不能独立作谓语，但它仍保持动词的特点，既可以有自己的宾语和状语。
同时动词不定式又具有名词、形容词、副词的特征，在句中可以作主语、表语、宾语、宾语补足语、定语和状语。
二. 动词不定式的构成：to+动词原形三. 动词不定式作宾语后面能接不定式作宾语的动词有：agree, ask, choose, decide, forget, hope, learn, want, wish, would like等。
We hope to get there before dark. 我们希望天黑以前到那儿。
The girl decided to do it herself. 那个姑娘决定自己做那件事。
动词不定式作宾语的注意事项（2点）1. 有些动词既可跟不定式作宾语，也可跟动名词作宾语，但含义不同：remember to do记住要做某事remember doing记得曾经做过某事forget to do忘记要做某事forget doing忘记曾经做过某事stop to do停下来去做某事stop doing停止做某事go on to do继续做另一件事go on doing继续做原来在做的事I remember seeing you somewhere before.我记得以前在哪儿见过你。
Please remember to turn off the light when you leave.离开时请记得关好灯。
2. 不定式作宾语时，如带有宾语补足语，则要把不定式放到后面，用it作形式宾语，构成“主语+动词+it+宾补（形容词、名词）+不定式”结构。
如：He found it very difficult to get to sleep.他发现很难入睡。
四. 动词不定式作宾语补足语1. 后面能接to不定式作宾语补足语的动词有：ask, order, teach, tell, want, wish, help等。
动词不定式
动词不定式的基本形式是“to+动词原形
“, 有时可以不带to.动词不定式没有人称
和数的变化, 在句子中不能作谓语。动词不
定式仍保留动词的特点，即可以有自己的
宾语和状语。to learn English, to speak
at the meeting.在句中可以作主语、表语、
宾语、宾语补足语、定语和状语。
3. – I can’t work in this way. -- Why not ____ B it in some other way? A. try to do B. try doing C. trying to do D. trying doing 4. Since you find it difficult ____ D a decision, you’d better a discussion( 讨 论) with your parents. A. reach; have B. reaching; have C. reach; having D. to reach; have
They looked for him everywhere and
found him __ b under the tree.
a. lies
b. lying c. lay
d. lain
考点: see/hear/find/watch sb. do sth.
(看见某人做了某事） See/hear/find/watch sb. doing sth. (看见某人正在做某事)
找出句子中的不定式, 并说出作用：
1. It takes you ten minutes to get there. 主语 2. I hope to see him soon. 宾语 3. His wish is to become an artist. 表语 4. People eat to live, but not live to supermarket just now. a. entered b. entering
动词不定式
To do the homework takes us an hour ork.
2.爬陡峭的山是危险的。
To climb steep mountain is very dangerous . =It is very dangerous to climb steep mountains.
It is easy for me to solve the problem.
It is very kind of you to help me .
做主语的动词不定式结构 （一）.To do something is +形容词。= It is +形容词to do something .(做某事是怎样的)
B
1.He’d better ___B______ in the street .
A. not to play B. not play C. not playing
2. Do you enjoy ___C____________ a kite in the open air ?
A. to fly B. fly
My sister likes _e_a__ti_n_g__ meat for lunch .
This lunch she likes ______vegetables for lunch .
to eat
请别忘记动词后的介词
Who are you looking __f_o_r____? I need a pen to write __w_i_t_h___. She need a piece of paper to write _o__n____. He is the boy the teacher often talk _t_o__/_w_i.th Whom are you waiting __f_o_r_______ . Who is the next that the doctor will look _o_v_e_r___.
动词不定式
动词不定式学习报告：不定式是动词的一种非谓语形式。
不定式有两种：一种是带to的不定式，另一种是不带to的不定式。
它可以和助动词或情态动词构成谓语。
不定式的否定形式：在to的前面加not.不定式的复合结构：for somebody to do something.不定式的复习要点：1.不定式的否定形式：在to的前面加not.2.不定式有两种：一种是带to的不定式，另一种是不带to的不定式3.不定式在句中做宾语时应该注意：不定式在感官动词和使役动词后作宾语时不带to。
注意：请熟记以下顺口溜：四看：即四个表示看的动词：see,watch,notice,observe.三使：即三个使役动词译成中文让：make have let.两个短语：listen to look at.一听：hear一感觉：feel一可带可不带（动词后加不加to都可以）：help4.不定式在句中作定语时应该注意：不定式做定语时，通常以短语的形式出现，因此要放在他所修饰的名词或代词之后。
当它所修饰的词是不定式动作的接受者时，它所修饰的名词或代词是动宾关系。
如：Lucy wanted to find something to read.Lucy wanted to find a pen to write with.注意：如果不定式本身是不及物动词，不能和所修饰的动词产生动宾关系时，要搭配相应的介词。
5.不定式在句中做状语时应该注意：1.不定式做结果状语时主要用在too...to...,和...enough to ...的结构中，在试题中主要是这两个结构和so...that...（带结果状语从句的复合句）结构的互相转换。
如：The problem is so easy that all of us can work it out.=The problem is easy enough for us to work out.The problem is so difficult that we can't work it out.=The problem is too difficult for us to work out.=The problem isn't easy enough for us to work out.2.不定式在句中做目的状语时常用in order、so as 这些词来修饰不定式短语。
动词不定式
动词不定式一、动词不定式的概念非谓语动词包括动词不定式、动名词、现在分词和过去分词。
动词不定式（The Infinitive）一般由“to + 动词原形”构成。
它在句中起名词、形容词或副词的作用，同时也保留着动词的一些特征，它可以有自己的宾语或状语。
二、不定式的功能与用法（1）作主语：To see is to believe.眼见为实。
（百闻不如一见）To know everything is to know nothing. 事事皆懂，无一精通。
注意：不定式作主语时，常用it 作形式主语，而将作主语的不定式放在句子后部。
例如：It is exciting to surf the Internet. 上网是件令人兴奋的事。
It’s necessary for you to lock the car when you do not use it.不用车的时候，锁车是有必要的。
It’s very kind of him to help us.他帮助我们，他真好。
★It's …for sb. ... 和It's…. of sb. …这样的句子中，由于表语形容词性质的不同，导致了不定式逻辑主语标志用for 或of的区别。
1）for sb.句型中的形容词一般为表示事物的特征、特点，表示客观形式的形容词，如easy, hard, difficult, interesting, impossible等：例如：It’s very hard for him to study two languages. 对他来说学两门外语是很难的。
2）of sb.句型中的形容词一般为表示性格，品德，心智能力，表示主观感情或态度的形容词，如good, kind, nice, clever, foolish, right。
例如：It seemed selfish of him not to give them anything.他不给他们任何东西，这显得太自私了。
(完整版)英语动词不定式大全
英语动词不定式大全动词不定式是一种活跃的非谓语动词.它在句中起的是名词。
形容词或副词的作用，可在句子中作主语。
宾语。
定语。
状语和宾语补足语。
动词不定式的形式是"to +动词原形",但to有时要省去。
动词不定式在具体运用时，用不用to,取决于谓语动词的用法:一。
带to的不定式结构1.我们学过的能直接跟带to的不定式结构的动词主要有:want， ask， tell， hope， learn, try， decide, forget， remember, like ,love， stop， go， come等。
2.动词不定式的否定形式是在不定式前直接加not，即not to do sth。
例如：Jim told me not to wake up Kate.吉姆告诉我别叫醒凯特.二。
不带to的不定式结构以下几种情况使用不带to的动词不定式:1。
在固定词组had better之后。
注意:had better的否定形式是had better not do sth.。
例如:You had better go home now。
你最好现在回家.It’s cold outside. You'd better not go out。
外面很冷，你最好不要出去。
2.在let,make,see， feel, watch，hear等感官或使役动词后,要跟不带to的动词不定式作宾语补足语.例如:I made them give me the money back.我迫使他们把钱还给我。
I didn't see you come in.我没看见你进来.3.在引导疑问句的why not之后。
"Why not+不带to的不定式"是Why don't you do…的省略，可以用来提出建议或劝告。
例如:Why not go with us。
为什么不和我们一起去呢。
Why not take a holiday。
动词不定式
Infinitive不定式用法知识要点要点四语法动词不定式动词不定式由“to+动词原形”构成，其否定形式是“not to do”。
(1)不定式的用法①作主语：不定式短语作主语时，句子的谓语动词常用单数，其位置有两种。
a.把不定式置于句首。
例句：To get there by bike will take us half an hour.骑自行车去那里要花半个小时。
b.用it作形式主语，把真正的主语（不定式）置于句后，常用于下列句式中：It+be+名词+to do sth.知识要点例句：It’s our duty to obey the law.遵守法律是我们的责任。
It takes sb.+some time+to do sth.例句：How long did it take you to finish the work?完成这项工作花了你多长时间？It+be+形容词+for sb.+to do sth.注意：在表示事物性质的形容词后常用介词for,这类形容词有hard,easy,heavy,necessary,possible,important,difficult等。
例句：It’s hard for him to get rid of his bad habits.对他来说改掉坏习惯很难。
It+be+形容词+of sb.+to do sth.注意：在表示性格特征、行为表现的形容词后用介词of,这类形容词常用的有good,kind, nice,clever,honest,wise,careful,brave,careles s,cruel,foolish,rude,stupid,silly等。
例句：It is stupid of you to write down everything the teacher says.把老师说的每件事都记下来，你真是愚蠢。
It seems (appears)+形容词+to do sth.例句：It seemed impossible to save money.存钱似乎不太可能。
动词的不定式
动词不定式动词不定式在中学英语中应用非常广泛，一方面在句中可以起名词，形容词，或副词的作用，同时也可在句中做主语，宾语，表语等。
动词不定式的形式一般是“to+动词原形”，但是to 有时候可以省去。
（一）不定式做主语动词不定式做主语时，句子中谓语动词常用单数，其位置有以下两种。
1.把动词不定式置于句首。
To see is to believe .百闻不如一见2.用it 做形式主语，把真正的主语不定式放在后面，常有以下句型(1).It+be +名词+to do sth.It’s our duty to take good care of the old. 好好照顾老人是我们的责任。
（2）It takes sb +some time +to do sthHow long did it take you to finish the work? 完成这项工作你花了多少时间（3）It +be+形容词+for sb+to do sth.It’s necessary for you to lock the car.锁车是很有必要的。
（4）It +be +形容词+ of sb+to do sth.It was silly of us to believe him.我们真愚蠢，竟然相信了他的话。
（5）It seems\appears +形容词+to do sth.It seemed impossible to save money.省钱看起来是不可能的（二）动词不定式做宾语能以不定式做宾语的动词很多，常见的有：want,like,wish,hate,prefer,hope,continue,manage,try,ask,offer,start,forge t,promise,mean,pretend,intend,begin,attempt,decide,learn,desire,agree, care,choose,determine,undertake,expect等。
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动词不定式专题练习1. This company was the first ____ portable radios as well as cassette tape recorders in the world.A. producingB. to produceC. having producedD. produced2. The purpose of new technology is to make life easier, ____it more difficult.A .not making B. not make C .not to make D. nor to make3. Helen had to shout ______above the sound of the music .A .making herself hear B. to make herself hearC. making herself heard D .to make herself heard4. I don’t know whether you happe n_______ ,but I am going to study in the U.S.A this September.A .to be heard. B. to be bearing C .to hear D .to have heard5. The news reporters hurried to the airport, only ______the film stars had left.A .to tellB .to be toldC .tellingD .told6. You were silly not _______your car.A. to lockB. to have lockedC. lockingD. having locked7. The teacher asked us ______so much noise.A .don’t make B. not make C. not making D .not to make8. An army spokesman stressed that all the soldiers had been ordered _____clear warnings before firing any shots.A .to issue B. being issued C. to have issued D. to be issued9. I’d rather have a room of my own, however small it is, than_______ a room with someone else.A. to shareB. to have sharedC. shareD. sharing10. The bank is reported in the local newspaper_________ in broad daylight yesterday.A. robbedB. to have been robbedC. being robbedD. having been robbed11. A number of paintings in the castle are believed ________in a fire.A. being destroyedB. having been destroyedC. to be destroyedD. to have been destroyed12. The meeting _______ next week is sure to be a great success.A. to take placeB. to be taken placeC. to have taken placeD. being taken place13. As a result of my laziness, I failed ________ my work in time.A. and finishedB. to finishC. and finishingD. to finished14. I am sorry ______ written you a letter at the time.A. to have notB. to not haveC. not to haveD. not having15. Will you lend him a magazine _________?A. to be readB. for readingC. to readD. he read16. He could do nothing but _______for the bus _________.A. wait, to comeB. wait; comeC. waiting; comingD. waited; came17 .It is a problem that doesn't need ________ right now.A. to solveB. solvingC. being solvedD. to be solving18. There’s a man at the reception desk who seems very an gry and I think he means _______ trouble.A. makingB. to makeC. to have madeD. having made19. I remember _______him _______the bike needed __________.A. hearing, saying, to repairB. to hear, say, to repairC. hearing, say, repairingD. to hear, saying, to be repaired20. --- You should have thanked her before you left.--- I meant _________, but when I was leaving I couldn’t find her anywhere.A. to doB. toC. doingD. doing so21. Robert is said to __________ abroad, but I don’t know what country he studied in.A. to have studiedB. to study B. to be studying D. to have been studying22. I’m gong to Xi’an next week. Have you anything __________ to your parents?A. to takeB. to be takenC. to be bought toD. to buy23. when are they __________ in their plan?A. handB. handedC. to handD. give24. In such dry weather, the flowers will have to be watered if they _____________.A. have survivedB. are to surviveC. would survivedD. will survive25. When we hurried to the station, there happened ________ no bus at that time.A. to haveB. to beC. havingD. being26. I lost my way in complete darkness and, _________ matters worse, it began to rain.A. madeB. having madeC. makingD. to make27. At ________ time does the salesgirl get up late in the morning, though she isalways too busy _________ a good rest.A. no, to takeB. no, takingC. any, to takeD. one, taking28. --Are you a student?--No, but I used _________.A. to beB. to wasC. to doD. to be a29. I stopped to listen, and my son seemed _________ himself _________ in the living room.A. to enjoy, to shutB. to be enjoying, shuttingC. to be enjoying, shutD. to have enjoyed, having shut30. With a lot of difficult problems _________, the newly-elected president is havinga hard time.A. settledB. settlingC. to settleD. being settled。